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Thread: O2 Sensors Look Lazy?

  1. 03-15-2025 #1
    dliparoto65
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    O2 Sensors Look Lazy?

    2016 GMC Yukon 6.2 8L90

    Rarely the thing takes off really good and most of the time it is average, I don't have a log of it taking off good.
    On the log it looks like the O2 sensors are lazy. No cell light

    If someone can look at the log I attached and help with with this diagnoses would be great.

    Thank You

    Pat-G Tune 1 - Log 1.hpl
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  2. 03-15-2025 #2
    5FDP
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    Your engine is running way too cold man, it can't even get over 150ish degrees.

    And as far as the o2 sensors go, they look pretty normal to me.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.
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  3. 03-15-2025 #3
    dliparoto65
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    Quote Originally Posted by 5FDP View Post
    Your engine is running way too cold man, it can't even get over 150ish degrees.

    And as far as the o2 sensors go, they look pretty normal to me.
    Thank you,
    Temp is low because of a short drive, had no time to get up to temp. On longer drive gets to thermostat temp witch is stock 195, gauge reads 210.

    Thanks for your reply
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